Smoky Quartz and Schorl - NER 011

A group of smoky quartz and schorl crystals

Measurements:  75 x 63 x 35 mm

Description:  A group of smoky quartz and schorl crystals. One of the bigger crystals has a patch of (thin) (possibly) hyalite opal on its termination.

The termination points have a few small nicks, while the rest of the specimen has a flaw, contact marks and nicks.

Weight of Specimen:  138.5 g 

Chemical Composition:  SiO2  (quartz)  
                                      NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)

Hardness on Mohs Scale:  (quartz)  7                 
)  7.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 011

US $ 180

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